Entangled states from sparsely coupled spins for metrology with neutral atoms

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Kuriyattil, Sridevi and Poggi, Pablo M. and Pritchard, Jonathan D. and Kombe, Johannes and Daley, Andrew J. (2025) Entangled states from sparsely coupled spins for metrology with neutral atoms. Physical Review Letters, 134 (24). 240801. ISSN 1079-7114 (https://doi.org/10.1103/h6sr-yxgw)

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Abstract

Quantum states featuring extensive multipartite entanglement are a resource for quantum-enhanced metrology, with sensitivity up to the Heisenberg limit. However, robust generation of these states using unitary dynamics typically requires all-to-all interactions among particles. Here, we demonstrate that optimal states for quantum sensing can be generated with sparse interaction graphs featuring only a logarithmic number of couplings per particle. We show that specific sparse graphs with long-range interactions can approximate the dynamics of all-to-all spin models, such as the one-axis twisting model, even for large system sizes. The resulting sparse coupling graphs and protocol can also be efficiently implemented using dynamic reconfiguration of atoms in optical tweezers.

ORCID iDs

Kuriyattil, Sridevi, Poggi, Pablo M. ORCID logoORCID: https://orcid.org/0000-0002-9035-3090, Pritchard, Jonathan D. ORCID logoORCID: https://orcid.org/0000-0003-2172-7340, Kombe, Johannes ORCID logoORCID: https://orcid.org/0000-0002-9982-2068 and Daley, Andrew J. ORCID logoORCID: https://orcid.org/0000-0001-9005-7761;
  • Item type:Article
    ID code:93004
    Dates:
    Date
    Event
    20 June 2025
    Published
    2 June 2025
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:03 Jun 2025 14:51
    Last modified:13 Jan 2026 21:23
    URI:https://strathprints.strath.ac.uk/id/eprint/93004
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